135504510025 has 24 divisors (see below), whose sum is σ = 172074514304. Its totient is φ = 105795547200.

The previous prime is 135504510013. The next prime is 135504510059. The reversal of 135504510025 is 520015405531.

It is not a de Polignac number, because 135504510025 - 2⁷ = 135504509897 is a prime.

It is a super-2 number, since 2×135504510025² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1272127 + ... + 1374523.

Almost surely, 2^135504510025 is an apocalyptic number.

It is an amenable number.

135504510025 is a deficient number, since it is larger than the sum of its proper divisors (36570004279).

135504510025 is a wasteful number, since it uses less digits than its factorization.

135504510025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103681 (or 103676 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 31.

Adding to 135504510025 its reverse (520015405531), we get a palindrome (655519915556).

The spelling of 135504510025 in words is "one hundred thirty-five billion, five hundred four million, five hundred ten thousand, twenty-five".